Alcadia rotunda explained

Alcadia rotunda is a species of an operculate land snail, terrestrial gastropod mollusk in the family Helicinidae.

Description

The height of the shell attains, its greatest diameter .

(Original description in Latin) The thick, smooth shell is globular-round and pink. The spire is inflated with a pointed apex. The shell contains six slightly convex whorls. It has a narrow, semi-lunar aperture with a thin, slightly reflexed outer lip. The columella is thickened and has some impressions. The columellar angle of the aperture is notched and sinuous.

(Original description in French also by A. d'Orbigny) A globular, slightly elevated shell that is thick and smooth. The spire is swollen with a slightly pointed apex and consists of six barely convex whorls. The narrow, semi-lunar aperture has thin, sharp, and very slightly reflexed edges. The columella is encrusted over half the width of the aperture and features a strong triangular depression in the middle. At the front, the columellar angle is slightly prominent and separated from the rest of the edge by a slight notch.^[1]

Distribution

This species occurs in Cuba.

Further reading

• Pfeiffer . L. . Nachträge zur Monographie Pneumonopomorum . Malakozoologische Blätter . 1854 . 1 . 80-111 .
• Poey . F. . Memorias sobre la historia natural de la Isla de Cuba, acompañadas de sumarios Latinos y extractos en Francés. . La Habana. . 1852 . 1 . 1-463 .
• Pfeiffer . L. . Description of twenty-nine new species of Helicina, from the collection of H. Cuming, Esq. . Proceedings of the zoological Society of London . 1849 . 16 . 187-188 .
• Boss . K. J. . Jacobson . M. K . Monograph of the genus Alcadia in Cuba (Mollusca: Prosobranchia: Helicinidae) . Bulletin of the Museum of Comparative Zoology at Harvard College . 1973 . 145 . 311-358 .

Notes and References

1. Book: Orbigny . A. d' . Mollusques. In: R. de la Sagra (ed.). Histoire physique, politique et naturelle de l'Ile de Cuba. . 1842 . Arthus Bertrand . Paris .